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Open AccessArticle

Dating the Sedimentary Protolith of the Daldyn Group Quartzite, Anabar Shield, Russia: New Detrital Zircon Constraints

1
Karpinsky Russian Geological Research Istitute of Geology (VSEGEI), 199106 St. Petersburg, Russia
2
Institute of Precambrian Geology and Geochronology, Russia Academy of Sciences (IPGG RAS), 199034 St. Petersburg, Russia
3
Saint-Petersburg Mining University (Mining University), 199106 St. Petersburg, Russia
*
Author to whom correspondence should be addressed.
Geosciences 2020, 10(6), 208; https://doi.org/10.3390/geosciences10060208
Received: 16 April 2020 / Revised: 21 May 2020 / Accepted: 26 May 2020 / Published: 30 May 2020
(This article belongs to the Special Issue Distribution of REE and Trace Elements for Different Types of Zircons)
Quartzites and paragneisses of the Archean granulite series of the Anabar Shield (Siberian Craton, Russia) are described geochemically. The Sm-Nd isotope systematics of the rocks and the U-Pb age (SHRIMP II) and geochemistry of zircons from quartzites and paragneisses are studied. Newly formed zircons from quartzites display geochemical characteristics of the magmatic type and were produced by rock anatexis upon granulite-facies metamorphism. The Paleoproterozoic age of the latest detrital zircons, 2250 ± 24 Ma, constrains the maximum age of sedimentary rock deposition. The anatectic rims around detrital zircons were formed ca. 2000 ± 9 Ma ago. The time of deposition of the sedimentary protolith of gneisses and quartzites falls within the age interval of the above-mentioned dates and is tentatively accepted as 2.1 Ga. The presence of Paleoproterozoic metasedimentary rocks in the Daldyn Group implies the tectonic heterogeneity of the series and the existence of Paleoproterozoic rock bodies among the predominant Archean rock sequences. View Full-Text
Keywords: Anabar Shield; granulites; Archean; Paleoproterozoic; quartzites; zircon; geochemistry; U-Pb age; Sm-Nd systematics Anabar Shield; granulites; Archean; Paleoproterozoic; quartzites; zircon; geochemistry; U-Pb age; Sm-Nd systematics
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Gusev, N.I.; Sergeeva, L.Y.; Skublov, S.G. Dating the Sedimentary Protolith of the Daldyn Group Quartzite, Anabar Shield, Russia: New Detrital Zircon Constraints. Geosciences 2020, 10, 208.

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